So I picked up this Performa 450 (Lciii) and it has the words "DEMO UNIT" in the case (pictures below). I also noticed the board is slightly different than that of your typical Lciii/Performa 450 U38 is completely gone it's normally a blank space for a chip but on this board there's no blank space or spot for whatever chip that would've been, instead you see this strange chip, I have no idea what it does but the machine boots just fine. I have managed to find a picture of one other board with the G1 area left blank which is the same as this board except that this board actually has those components present. If you have any ideas please let me know, the serial number isn't even recognized on the Mac serial number decoders I've managed to go to. I also find the "DEMO UNIT" on the case quite odd as the rest seems like a typical case for these machines. Thanks for looking and any comments or feedback is appreciated.